When we first moved into our home, I was very into a dark gray color called Westchester Gray. When I worked on that project, I considered taking down the light gray wallpaper, but my experience with removing it in the past wasn't ideal. But as time went on, I decided the gray wallpaper had to go. And then there were the pencil lines I use to hang the wallpaper panels straight. I also noticed that there was a dark line on the walls where the two panels of wallpaper slightly overlapped.